According to a study published this week by Proceedings of the National Academy of Sciences, it seems orgasmic facial expressions vary depending on where in the world you’re from. When asked to decide which face was mid-climax, participants from Western cultures decided an orgasm looked more excited and outward (signified by an open mouth and wide-eyes) while Eastern participants believed that an orgasm looked like closed mouth smiles and gentle release. Read more about what their answers signify culturally on Ars Technica.